Lock.



.|.`A. FISCHER.

LOCK.

' APPLICATION FILED SEPT.2. |914.

151549499. Patentedsept. 21, 1915. v 2 SHEETS-SHEET I.

J. A. FISCHER.

' LOCK. PPLICATION FILED SEPT.2. 1914.

para

; STAT JOHN A. FISCHER, 0F MEMPHIS, TENNESSEE.

LOCK.-

Specicationof Letters Patent.

Patented sept-.21, i915.

Application filed September 2, 1914. Serial No. 859,811.

To all whom it may concern.'

Be it known that I, JOHN A. FISCHER, a citizen of the United States, residing at Memphis, in the county7 of Shelb1 and State of Tennessee, have invented certain new and useful Improvements inv Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art -to which it appertains to make and use the same.

This invention relates to certain new and usati-ul improvements 1n locks, and resides more especially in the provision of a novel locking mechanism for use in connection with doors and the like.

The object of my invention is the production of a` locking device positioned within the spindle of the usual knob-operated door latch, and having means whereby the lock can be operated from the inside `so as to prevent opening from without, and can be further manipulated and locked on .the inside to prevent the operation of the usual key from the outside.

Another object of my invention is the provision of a locking device consisting of a compact and practical mechanism' which can be readily applied to a door, and means associated with the said locking device for properly adjusting the several parts within the door.

- in the keeper under all and every condition now experienced. in the building art, including a longitudinal adjustment thereof and a positioning of the bolt for use when the door is to swing on both sides of the j amb.

The invention-further consists in the novel ke locking mechanism contained within the spindle and the arrangement and combination of parts hereinafter described and pointed out in the appended claims.

In the drawings showing the preferred embodiment of my invention as applied to a door; Figure 1 is a transverse sectional view through a door showing my im'proved locking mechanism in position. Fig. 2 is a vertical longitudinal sectional view illusf trating the locking bolt in place within the usual keeper. Fig. 3 is a view similar to Fig. l showing the locking mechanism in position for preventing. the door from being opened vfrom the outside. Fig. 4 is a detail view of the locking bolt showing the manner in which the operating studs move the same. Fig. 5 is an end view of the knob upon the inside of the door, illustrating the additional locking device for preventing the operation of the key from the outside. Fig. 6 is a similar view with the said device in an ,operated position. Fig. 7 is a detail view of the cam and operating stud therefor, used in locking the locking bolt. Fig. S is a detail view, partly in section, of my improved locking bolt. j Fig. 9 is an end view thereof. Fig. 10 is a detail cross sectional view through the same on line 10-10. Fig. 11 is a detail vertical sectional view of the key locking mechanism. Fig. l2 is an enlarged cross-sectional View through the ke'y locking mechanism 'illustrating the position of the ball tumblers when in inoperative position. Fig. 13 is a similar view showing the ball tumblers in operative position, and

resting in the proper depressions in the in-y sertedikey, and Fig. 14 is a detail. view of the key for the key locking mechanism.

The present invention is primarily. de-

'signed for use upon doors, and, as shown,

comprises a transversely arranged spindle having the usual knobs on eaclrend thereof, a locking 'bolt mounted above the said spindle and adapted to be venga-ged by a part of the mechanism contained within the spindle, a locking device located in one end of the spindle and in one knob for locking the bolt against movement, a key locking mechanism contained in the other end of said spindle and in the other knob, for locking the bolt also, the aforesaid lockingdevice being so designed and arranged as to prevent the key locking mechanism at certain times from operating when the key is inserted. These several associated parts and mechanisms are adapted to coperate with each other at certain times, as `will appear more fullyhereinafterl Referring to the drawings: The spindle l is of tubular formation, being provided with a central screw-threaded portion 2 and the screw-threaded*portions 3 and 4 at the extremities thereof for the reception of the usual knobs and 6. The knobs are preferably held in place upon the screw-threaded portions by set screws 7 and 8. Openings 1a are provided in the spindle, through which extend studs, to be later described.

The spindle 1 extends through an opening 9 provided in the door 10, and upon each side of the central screw-threaded portion is provided with an adjusting and securing member 11.

In assembling the device and more especially the positioning of the spindle within the door, the members 11 are run on each end of the central screw-threaded portion and securely hold the spindle in its properlyA adjusted position. Screws 12 are then passed through the members 11 and firmly secure the spindle in position, as will be readily understood. `Suitable finishing plates 13 and 14 are then passed over the ends of the spindle and abut against the members 11 and each side of the door. These plates are preferably of ornamental design, and are secured to the door by any suitable means.

The associated locking and operating mechanism of the spindle is positioned within the tubular member 1, and consists of a shaft 15 having a reduced portion 16 and a squared portion 17. Slidably mounted upon the shaft 15 is an encircling sleeve 18, adapted to move longitudinally of the spindle. This sleeve is provided with the projecting studs 19 which engage the locking bolt 20, to be described presently. A cam Slot or groove 21 is also provided in the said sleeve and operates in conjunction with a stud 22 carried by the shaft 15. The stud 22 has a predetermined path of travel in the slot or groove 21, as shown in Fig. 4. By this construction it will be seen that the shaft 15 is capable 'of being rotated for a distance independently of the knob operated spindle 1. This mechanism for movving the shaft 15 independently of the spindle 1 constitutes the locking device for the locking bolt, andwill now be described. This mechanism is positioned in one end of the \,spindle and the attached knob. It consists of 4a sleeve 23 secured to the spindle 1 by the set 'screw 24, and further secured to the shaft 15 against longitudinal movement in the spindle by a ring 25 sprung into -a slot 26 formed in the sleeve and an annular groove- 27 provided on the shaft` 15. From this construction it will` be seen that as the spindle 1 is rotated by the knob 6, the sleeve turning wings 31. A projecting member 32 is provided on the locking device, and consists of an engaging lug 33 adapted to iit within a corresponding opening 34 formed in the knob 6 at certain times. The member 32 is further provided with an enlarged p0rtion 35 the shoulder of which is adapted to engage the inside wall of the knob 6 and prevent its withdrawal. This locking device when turned as shownl in Figs. 5 and 6 rotates the shaft 15, and when this takes place the stud, secured to the shaft and operating in the cam slot, forces the sleeve longitudinally of the spindle, thereby positioning the lugs so as t0 prevent the withdrawal of the locking bolt, as shown in Fig. 3. The locking device will also lock the mechanism against the use of a key by reason of the member 30 being moved outwardly until the lug 33 engages the opening 34 in the knob. When in this position the shaft 15 can not be rotated by either the knob or the key, as will presently be described.

The locking bolt 20 which is operated by the mechanism just described is positioned above the spindle 1, and is incased within a Y sleeve 36. All of the associated parts of the locking bolt are contained within the said sleeve, which permits of the locking bolt being readily inserted within the door and securely held there by the screws 37 passing `through the Haring end formed on the end of the sleeve 36, as shown in Figs. 2 and 9.

Provided about midway on each side of the sleeve 36 are notches or openings 36, the purpose of which is to confine the stud 19 therein when a locked position of the mechanism is desired.

Referring to Figs. 2 and 8, the locking bolt comprises the bolt 38 having a beveled chamfered nose 39; an internally positioned sleeve 40, a spring actuated bar 41 extending into the sleeve, and a screw connection 42 uniting the bolt 38 with the. said bar 41. The bolt 38 isprovided with an opening 43 through which extends the head 44 ofthe screw connection 42. A shoulder 45 is provided within the bolt, and together with the end of the sleeve 40 firmly positions the enlarged head 46 of the screw connection therein. The sleeve 40 is secured to the bolt by the set screw 40a which also bea-rs against the squared shank 47 of the spring-actuated bar 41, see Fig. 10. The shankl 47 of the bar 41 is slidably mounted within the sleeve 40, and receives the screw-threaded end 48 0f the screw connection.

The spring actuatedv bar 41 is guided in a slot 49 formed in the sleeve 36. A spring 50 is interposed between the said bar in the recessed portion 51 thereof, and a cap 52 secured to the inner end of the sleeve 36.

This spring presses the bar outwardly, the

iso

tacting with the sleeve 36 at the end of the slot 49. The spring bar 41 is also provided with a depending lug 54 formed by the cut away portions 55 at either side thereof. This lug is adapted to be engaged by the projecting studs 19 according to the direction in which the'spindle 1 is rotated, the cut-away portions 55 allowing the said studs to swing into engagement with he lug, ask

will be readily understood.

In effecting an adjustment of the bolt so that it will properly fit and conform to the keeper on the jamb, the screw head 44 is turned, thereby rotating the screw-threaded end 48 in the shank 47 of the bar 41. The enlarged head 46 of the screw connection being firmly held within the bolt, it will be seen that vas the screw 48 isyrotated the shank 47 ismoved longitudinally within the sleeve, and the bar 41. moved against the action of the spring. Assuming the bar 41 to be forced outwardly of the sleeve 40, it will be seen that the locking bolt as a unit will be forced out of the sleeve 36 and the engaging nose of the bolt regulated to the desired length'for engagement with the keeper. Av

reverse movement of the Vbar will correspondingly decrease the distance the nose of the bolt will protrude, as will be readily understood. Thus it will be obvious that an adjustment is provided wherein the locking bolt can be readily fitted to its respective keeper, thereby obviating the rebuilding of the adjoining structure and resetting of the lock should the several parts fail to aline.

In adjusting the bolt for use upon a door which is to swing to either side of the j amb,

The position as shown in Figs. 8 and 9 ofI the drawings illustrates the locking bolt and beveled nose 39 when in this adjusted position; the ordinary working of the bolt when the door is opening on one side only being shown in Fig. 2.

The contour of the beveled nose 39 permits of its engagement with the keeper when swung from either side, as will be readily understood. Y

The key locking mechanism which is combined with the locking parts hereinbefore described willnow be set forth. It comprises a barrel 57 located within the opposite end of the spindle and the knob 5. The barrel 57 is secured within a shell or sleeve 58, which latter is secured within the spindle 1. A ring 59 is sprung into a slot formed in the sleeve 58 and the annular groove 60 formed in the barrel, thereby preventing the barrel from being Withdrawn. The barrel 57 is provided with the usual key slot 61 and a plurality of recesses 62 in which are positioned a series of tumblers or balls 63.

These tumblers or balls 63 when in the position shown in Fig. 12 protrude outwardly into openings 64 formed in the shell or sleeve 58 and vprevent the turning of the barrel. The key 65, which is shown in cross section in Figs. 12 and 13, is provided with depressions 66 on each side thereof. The balls or tumblers are arranged to drop into the depression when the proper key has been inserted, as shown in Fig. 13. lVhen in this position the tumblers or balls recede linto the recesses 62, thereby allowing the barrel to turn, and in so doing operate the locking mechanism. The key is also provided with the forked extending portion 67 between which extends a cross rod 68 in the barrel. The end 67 extends past the barrel and into a second Abarrel 69, the slot 70 of which corresponds to the key hole slot in the barrel. A square recess 71 is provided in the second barrel 69 and receives the square end 17 of the shaft 15. This second barrel 69 is free to rotate in the shell or sleeve 58 when the key is put into the lock and turned. By this construction it will be seen that a secure key locking mechanism is provided, capable of securing the locking device against all tampering and picking.

.The operation of the several parts will now be described in accordance with the several lockings to be effected.

The usual operation of the spring bolt in its engagement with and withdrawal from the keeper when no locking is desired is ap parent. A turning of the knob rotates the spindle 1, the edges of the openings 1a formed in the central portion of the spindle engaging the studs 19 and moving them so as to engage the depending lug, and thereby retract the bolt. lVhen the knob is released the spring operates to return the bolt in the usual manner.

In locking the door so as to prevent the opening thereof by turning the knob on the outside, the locking device 30 is gripped and given a quarter turn. In turning this, the shaft 15 is rotated, and the stud operating inthe cam slot or groove 21 caused to move the encircling sleeve 18 to the position shown in Fig. 3. When in this position the studs 19 have been shifted and are now located within the notches 36a formed in the sleeve 36. Should an attempt be made to turn the knob when in this position, the studs 19 immediately engage the side walls of the notches in the sleeve 36` which prevents their rotating and engaging the bolt.. When the parts are in this locked position. the door can be'opened by the insertion of a key within the barrel 57. The key must be made so as to conform to the tumblers within the barrel so that the latter will recede and allow the barrel to turn. The end 67 of the key extends into the second barrel 69 and turns the said barrel, thereby rotating the shaft 15 in a reverse direction to that given it whenlbeing locked. V-hen unlocked in this fashion, the stud working in the cam groove returns the sleeve and studs 19 to their normal operating position.

In order to lock the mechanism against the action of the key through the key locking mechanism, the locking device 30 is 0perated. 33 is withdrawn from Within the knob (i into the notch or opening 34 formed therein. lVhen in this position it will be obvious that any attempt to turn the shaft 15 through either the key operated mechanism or other tampering will be futile, as the said shaft is locked against rotation, and when this latter condition occur-s., .the bolt cannot be retracted.

'hile I have shown my invention as applied to a door, it is understood that it may be utilized in windows both of the lifting and swinging types, and to such other uses as properly fall within its application.

Thus it will be seen that an elicient and serviceable locking mechanism is provided, the application and manipulation of which is attended with a minimum amount of energv and a small degree of time.

Having thus described my invention, what 1 clailn and desire to secure by Letters Patent, is:

l. A locking mechanism of the class described including in combination a spindle, a locking bolt located above said spindle, means positioned within said spindle and adapted to engage the said locking bolt, said means comprising a shaft, a slidable member mounted upon said shaft and having a cam slot therein, and means secured on said shaft including a stud adapted to work in the said cam slot for moving the slidable member so as to prevent the movement of the lockingbolt.

2. A locking mechanism of the class described including in combination a spindle, a locking bolt located above said spindle, the said locking bolt comprising a sleeve having oppositely disposed notches therein, means positioned within said spindle and adapted to engage the said locking bolt, said means comprising a shaft, a slidable member mounted upon said shaft, and having studs projecting therefrom, and means secured to said .shaft including a cam for moving the slidable member carrying the studs into engagement with the notches formed in the sleeve so as to prevent the movement of the locking bolt.

3. A locking mechanism of the class described including in combination, a spindle, a locking bolt connected to saidspindle, means positioned within the said spindle for operating the locking bolt, the said means constituting the connection between the latter and the spindle, a key locking mechanism The wings are gripped, and the lug provided in said spindle and connected to the afforesaid means, and a locking means provided in said spindle and adapted to engage the said aforesaid means to prevent the operation of the key locking mechanism when the key is inserted.

4. A locking mechanism of the class described including in combination a spindle, a locking bolt'connected to said spindle, means positioned within the said spindle for operating the locking bolt, the said means constituting the connection between the latter and the spindle and comprising a shaft, a movable member positioned on said shaft, a locking means provided in said spindle and extending through the knob thereof adapted to operate the said movable member and lock the locking bolt aga-inst movement, and a key locking mechanism connected to the said shaft and adapted to be locked against operation bythe aforesaid locking means.

5. A. locking mechanism of the class described including in combination a spindle,

a locking bolt connected to said spindle,

means positioned within the said spindle for operating the locking bolt, the said means lconstituting the connection between the latter and the spindle, a key locking mechanism provided in said spindle, a key mechanism provided in said spindle and connected to the aforesaid means and to the other locking means provided in said spindle, and adapted to lock the locking bolt against movement and the key mechanism against operation.

6. A combined lock and latch mechanism including in combination a spindle, a locking mechanism provided in said spindle, and a latching and locking bolt" having a nose adapted to be adjusted for use when swinging in opposite directions in a horizontal plane and when operating in opposite directions in a vertical plane.

7. A locking mechanism' of the class described, including` in combination a spindle, a locking boltconnected to said spindle, means positioned within the said spindle for operating the locking bolt, the said means constituting the connection between the latter and the spindle. a key mechanism provided in said spindle and connected to the aforesaid means and an additional locking means provided in said spindle including a movable key adapted to engage the aforesaid means for preventing the operation of the key when inserted in the key locking mechanism.

8. A locking mechanism of the class described, including in combination a spindle having knobs thereon, a locking bolt connected to said spindle, means positioned within the said spindle for operating the locking bolt, the said means constituting the connection between the latter and the spindle, a key mechanism provided in said spindle and connected `to the aforesaid In testimony whereof I aiiix my signature,

meials, an1 an adgtionzl locking neanslirgin presence of two subscribing Witnesses. -v1 e int espin can inoneo t e o s thereon including a movable key adapted to; JOHN. A' FISCHER' 's engage the said knob and prevent the opera- Witnesses:

tion of the unlocking keyfwhen inserted in JOHN J. COLLINS,

the key mechanism. A EDWARD E. PASS. 

